A quick Googling turned up a Cities:Skylines map importer for real world terrain...

		patrickk on June 16, 2022 \| parent \| context \| favorite \| on: CityEngine: Build a Digital Twin of Your City A quick Googling turned up a Cities:Skylines map importer for real world terrain: https://www.pcinvasion.com/how-to-import-maps-cities-skyline... One idea I had was to take my home city and improve it with more pedestrian streets, greenery and light rail and to see the effect on traffic

Sounds fun! Feel free to share the results :)